| 摘要 |
A collision detection device for a vehicle includes an air chamber space, a pressure sensor and a collision determination portion. The air chamber space is arranged in the vehicle, and a pressure therein is changed in accordance with a collision with the vehicle. The pressure sensor detects a pressure change in the air chamber space. The collision determination portion determines the collision with the vehicle. An output value of the pressure sensor is integrated by time to calculate an integration value, and the collision with the vehicle is determined based on a threshold value set with respect to the integration value, and the output value of the pressure sensor. Therefore, when the collision with the vehicle occurs, whether an occupant protection device should be activated can be determined promptly. |
